121442234212 has 96 divisors (see below), whose sum is σ = 245278399968. Its totient is φ = 52114489344.

The previous prime is 121442234191. The next prime is 121442234269. The reversal of 121442234212 is 212432244121.

It can be written as a sum of positive squares in 16 ways, for example, as 24905258596 + 96536975616 = 157814^2 + 310704^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68340268 + ... + 68342044.

It is an arithmetic number, because the mean of its divisors is an integer number (2554983333).

Almost surely, 2^121442234212 is an apocalyptic number.

It is an amenable number.

121442234212 is an abundant number, since it is smaller than the sum of its proper divisors (123836165756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121442234212 is a wasteful number, since it uses less digits than its factorization.

121442234212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705 (or 2703 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

Adding to 121442234212 its reverse (212432244121), we get a palindrome (333874478333).

Subtracting 121442234212 from its reverse (212432244121), we obtain a palindrome (90990009909).

The spelling of 121442234212 in words is "one hundred twenty-one billion, four hundred forty-two million, two hundred thirty-four thousand, two hundred twelve".